TWI373969B - Television tuner - Google Patents

Description

1373969 IX. Description of the Invention: [Technical Field] The present invention relates to a television tuner, and more particularly to a highly integrated television tuner fabricated on a single substrate. [Prior Art]

Generally, the spectrum of the Very High Frequeiicy (VHF) and Ultra High Frequency (UHF) Radio Frequency (RF) television signals is between 48 MHz and 860 MHz. The spectrum between 48MHz and 860MHz contains a plurality of channels, each channel has a bandwidth of 6MHz (or 8MHz), and the frequency higher than the low frequency edge by 1·25ΜΗζ is the image carrier frequency (Vide〇Carrier Frequency), the distance The frequency of the image carrier frequency is 3 58MHz, the color carrier frequency (Color Carrier Frequency), and the frequency higher than the image carrier frequency by 4·5ΜΗζ is the sound carrier frequency (Audi() Carrier

Frequency). For example, the 6MHz bandwidth of the second channel is from 54Mhz to 60MHz, and the image carrier frequency is 55.25MHz, the color carrier frequency is 58.83ΜΗζ' and the sound carrier frequency is 59.75MHz. The above-mentioned radio frequency television signal can be transmitted to the television tuner via an antenna or a cable, and the television tuner can select a specific one or several channels and convert it into an intermediate frequency (IF) letter 5 1373969 or base. After the Baseband Frequency signal is transmitted to the processor for processing the subsequent frequency signal or the base frequency signal. The early TV tuner was a single down-conversion tuner. The tuner was composed of a number of independent electronic components, so it was so bulky that it could be called a metal shell. ). The single-turn tuner includes a mixer (Mixer). The main function of the mixer is to directly down-convert the RF TV signal to an IF signal or a baseband signal. Please refer to the first figure, which is a schematic diagram of the frequency conversion of a single down-converter. The radio frequency television signal (1) includes a plurality of channels, and after the reference signal (II) of a reference frequency is multiplied by the mixer, the channel A at the reference frequency (fL〇) of the radio frequency television signal is downlinked to the fundamental frequency. Taking the Switching Mixer as an example, the reference signal is a real wave and a square wave with a 50% cycle of the upper 疋, that is, the reference k number will include many spectral frequencies (Harmonic Frequency). ), for example, the resonant frequency of 3fL0, 5fL0, 7fL0, and the like. Therefore, as shown in the RF TV signal, the carrier B is 3 times the reference frequency (3fLO), the carrier C is 5 times the reference frequency (5fL〇), the channel C, and the carrier is 7 times the reference frequency (7fL〇). , will be transferred to the base frequency. Therefore, at least the same day channels with channels A, B ' C, D will appear at the fundamental frequency, as shown by the signal (hi). Assume that the intensity of the channels B, C, and D (Power) in the RF TV signal is 30 dB higher than that of the channel A, in order to reduce the SNR degradation caused by the resonant frequency, and make the channel b, 6 1373969 The strength of C and D at the fundamental frequency is less than the strength of channel A by 3〇dB. Therefore, it is necessary to provide a component with a resonance rejection ratio (Harm〇nic Rejecti〇n Rad〇) higher than 6〇. Therefore, in the conventional single-down tuner, a plurality of RF tracking filters are used in advance to reduce the intensity of the resonant channel in the RF television signal and to solve the mixing problem when the RF television signal enters the mixer. The resonance problem generated by the fundamental frequency. However, the RF tracking filter is bulky and requires adjustment of the frequency band by a high voltage, so the cost is relatively long: it is advantageous for integration into a single crystal integrated circuit. Due to the increasing technological progress of semiconductor lithography wafers, in order to effectively reduce the cost of television tuners, television tuners integrated with single crystals have been developed, for example, as disclosed in U.S. Patent No. 5,737, 〇35. Up-Down Dual Conversion TV tune crying 0 Please refer to the second figure, which is shown as a conventional up and down double-tuning tuner. The RF television signal received by the antenna 402 (or the electric cable) first passes through a RF low-pass filter (RFLP) 404 with a Cutoff Frequency of 900 MHz, so that the RF TV signal after filtering and wave-forming is filtered. The frequency band is limited to below 900 MHz. Then, the RF TV signal after the annihilation is a low noise transduction amplifier (L〇w_N〇ise

Tmnsconductance Amplifier (LNTA) 4〇6 Enlarge 20dB. Furthermore, the 'Local Oscillator' 411 outputs a first reference signal whose adjustable frequency range is between 1200 MHz and 21 〇〇 MHz. The first mixer (MIX1) 408 is a subtractive mixer (Subtractive Mixer), which can mix the output signal of the low noise transduction amplifier 7 1373969 (LNTA) 4G6 with the first reference signal and output one The first intermediate frequency signal 'makes the first intermediate frequency signal to include a specific channel (Desired Channel) having a carrier frequency of i2_Hz. That is to say, Xiang adjusts the solution of the first reference signal to convert the carrier of the specific channel into the MHz. Since the second oscillator can still rotate a second reference signal, the frequency is 1180 MHz. The second mixer (Μιχ2) 41〇 is an image rejection mixer (Image Rejection Mixer), which can mix the first-missing signal and the first-IF signal and turn out—the second middle The frequency signal ^ is ^ The intermediate frequency 彳 s number includes a specific channel with a carrier frequency of 20 MHz. That is, the carrier of this particular channel is converted to 20 MHz via the second mixer (ΜΙΧ2) 41〇. It is customary that the first mixer (mdJ) of the up-and-down double-tuner tunes up the carrier frequency of the specific channel to 12 〇〇 MHz and the second mixer (MIX2) 410 turns the carrier frequency of the specific channel down. To 2 〇ΜΉζ. Furthermore, since the frequency adjustment range of the first reference signal outputted by the first-first seismic oscillation H 411 is between 1200 MHz and 2100 MHz, the frequency adjustment rate needs to be = 54.5%, so the first seismic 411 must utilize multiple pressures. The voltage controlled oscillator (VC0) can be implemented. ° month to know, brother two maps, which is depicted as a conventional one, the other is not intended. In order to prevent mirroring of the 1160MHz frequency, the intermediate frequency filter 4〇9 is connected between the first mixer (MIX1) 408 and the second mixer (ΜΙχ2°°) 41〇 to be used in the first intermediate frequency signal. The frequency of 1160MHz is equal to _. It can be seen from the above that the conventional up-and-down double-tuning tuners are achieved by using the first seismic 411 of the first reference signal frequency and the second seismic 412 of the fixed eighth reference signal frequency. . The above-mentioned up and down double-tuning tuner is the main purpose of the invention. [Objective] The object of the present invention is to provide a second pair of reference for the upper and lower double-turning spectrometer so that the second unit can receive the -first reference signal of the -m constant frequency and the second state can receive the adjustable frequency. signal. Therefore, the present invention provides a television tuner comprising: one for receiving - a radio frequency signal; - the first - the seismic device can generate a solid a, the rate of the first pair of reference signals; - orthogonal mixing Receiving a radio frequency signal = a pair of reference signals and outputting a first in-phase signal and a first quadrature signal; the second earthquake can generate a second pair of reference signals that can be adjusted; - the younger cross mixer can receive the first The in-phase money, the first-quadrature signal and the second test signal output the second_signal and the second quadrature signal; and the two-phase filter can receive the second_signal and the second orthogonal money to generate the frequency signal. Therefore, the present invention further provides a television tuner comprising: - an end for picking up - a radio frequency signal; - the first - the present oscillator can generate a ^ frequency - first - pair reference signal; - an orthogonal hybrid connection - a radio frequency signal = with the first-to-parallel reference money and the same as the letter - the first - positive = letter, a first - processing circuit receives the first in-phase money and turns out - the first in-phase signal; - second The processing circuit receives the first-quadrature signal and outputs-processes the first-quadrature signal; the second seismic cover device generates a second-pair reference signal with a frequency of 1373969 adjustable; the double quadrature mixer can Receiving the first in-phase domain of the processing, the first orthogonal money of the processing and the second pair of reference signals, and outputting the second in-phase signal and the second orthogonal signal; and, - multiphase; Receiving the second in-phase signal and the second orthogonal signal and generating an intermediate frequency signal. The detailed description of the present invention and the accompanying drawings are to be understood by the accompanying drawings. [Embodiment] Please refer to the fourth figure, which illustrates a first embodiment of a dual quadrature mixer (Double Quadrature Mixer) architecture. The RF TV signal received by the antenna 502 is first input to a variable gain amplifier (Low-Noise Variable GainAmpHfie〇5〇4, and the amplified RF power number is passed again - CutQfmequency is 900MHz RF The low-pass filter (rfl〇w卩咖卩) makes the frequency band of the filtered RF TV signal limited to below 9〇〇MHz. Next, the _TV money input-orthogonal mixer 5 A first in-phase (in_Phase) signal (I) and a first quadrature-phase signal (q) are generated after 〇 8. That is, the first present oscillator 513 can generate the same frequency and phase difference of 90. The first-first phase signal (1) and the first quadrature signal (9) are generated after the reference signal is input to a quadrature mixer 508. In 10 1373969, in this embodiment, the first present oscillator 513 includes a first A voltage controlled oscillator 510 and a first frequency divider 512 are generated by the first voltage controlled oscillator 51 to generate an oscillating signal with a frequency of 1920 MHz, which is divided by the first frequency divider 512 (divided by two). The frequency (fl) is 960 MHz phase difference of 90 degrees of the first - pair reference signal Sincot and COS (〇t (where ω=2πί1), and multiplying the first reference signal by the filtered RF television signal to obtain the first in-phase signal (I) and the first orthogonal signal ( Q). Further, the quadrature mixer 508 is an additive mixer, so the first in-phase (I) and the first quadrature signal (Q) are filtered RF TVs. The signal directly acts as a frequency shifting operation, so that the first-phase signal (I) and the first orthogonal signal (Q) become wide-band intermediate frequency signals (wide-bandlF), that is, the first All channels can still be included in the phase signal (1) and the first-quadrature signal (Q). Next, the first in-phase signal (I) and the first quadrature signal (Q) are respectively input to the pass-through filters 514, 516. After the amplifiers 517 and 518 are respectively rotated, the signals are respectively input into a double quadrature mixer 52 to generate a second in-phase signal (1,) and a second quadrature signal (Q,). The second oscillator 525 Generating the second pair of reference signals of the same frequency and having a phase difference of 90 degrees and inputting the bi-orthogonal mixer 520 to generate the first-phase in-phase No. (Γ) and the second orthogonal signal (QI). In this embodiment, the two oscillators 525 include a voltage controlled oscillator group 522 and a second voltage divider 524' adjustable frequency range. The voltage-controlled oscillator group 522 of the two output pulses of 1960 MHz to 3720 MHz includes three voltage-controlled oscillations, that is, the second voltage-controlled oscillator 522a, and the third voltage-controlled oscillator 522b'. 11 1373969 four voltage-controlled oscillations: The 522c, after a second divide by $2), can generate the 筮 筮 夂 频率 频率 频率 980 980 980 980 980 980 980 980 , , 524 524 524 524 524 524 524 524 524 524 524 524 524 524 524 524 524 524 524 The second pair of reference signals of MHz to 1860 MHz and having a phase difference of 90 degrees and multiplying the second pair of reference signals by the filtered and amplified first-in-phase signal (1) and the first-quadrature signal (Q) Four signals are obtained, which are the same phase signal (ιι), in-phase quadrature signal (IQ), quadrature in-phase signal (QI), and quadrature quadrature signal (QQ), and the same phase signal (11) And after the quadrature in-phase signal (qi) is summed up, it becomes the second in-phase signal (7), and the same / mesh: the intersection signal (IQ) is orthogonal to the positive parent. To become the second quadrature signal (Q ') after a number (QQ) sum. - Since the voltage-controlled shock in group 522 can turn off the frequency of the oscillating signal, the second local oscillator 525 can pass the second in-phase signal (7) and the second quadrature signal via the adjusted second pair of reference signals outputted (Q,) The carrier of the specific frequency is converted to 3GMHZ to _Hz t _ such as 40MHz towel I is rejected by the intermediate frequency multiphase chopper (Curry Instant) 526 after rejecting the image frequency, and is transmitted through the bandpass After the filter and waver 528 eliminates other frequency noise, the specific V-member channel with the carrier frequency of 4_ίζ can be outputted, and the TV channel can be output via the path 彳i and then via the surface acoustic wave device (Surfaee A_tie Wave Filter, SAWF) () Don't remove the unwanted signal and output that particular channel. In addition: because the voltage controlled shock absorber group 522 can adjust the frequency of the output signal

12 1373969 The IFh is output after rejecting the image frequency via the low intermediate frequency polyphase filter 53〇, and the specific channel having a carrier of 4.5 MHz can be output after the noise of the other frequency is removed by the low pass filter 532. Generally, a digital video channel can be outputted via this path to output the particular channel. Refer to Table 1, which lists the frequency operation range, the frequency adjustment ratio, and the frequency adjustment range of the present oscillator for all of the voltage controlled oscillators in the first embodiment. Table 1 • ---- Frequency adjustment range Frequency adjustment rate Divisor The frequency of the oscillator is adjusted. The first voltage controlled oscillator 1920 0% 2 960 The second voltage controlled oscillator 1960-2480 23.4% 2 980~1240 The third pressure Controlled oscillator 2420-3020 22.1% 2 1210~1510 • Fourth voltage controlled oscillator 2960-3720 22.7% 2 1480~1860 Please refer to the fifth figure, which shows the double quadrature mixer of the present invention (Double Quadrature) A second embodiment of a tuner of the Mixer architecture. The RF television signal received by the antenna 602 passes through a Low-Noise Variable Gain Amplifier 604, and the amplified RF TV signal passes through an RF tracking filter 606 of an adjustable filter band. The RF TV signal can initially select 13 1373969 in the RF TV signal. Then, the frequency band in the radio frequency television signal can be input to a quadrature mixer 608 to generate a first in-phase signal (1) and a first quadrature signal (Q).

That is to say, a seismic event device can generate a -first-pair reference signal with the same frequency and phase difference of 90 degrees and input the quadrature mixer 6〇8 to generate the first-to-zero sign (1) and the first-orthogonal money. (Q). In this embodiment, the first-presence seismic center 613 includes a first voltage-controlled oscillator 61〇 and a --divided-frequency 612' generated by the first-pressure-controlled oscillator _ generating a frequency of 384 GMHZ. The first pair of frequency divisions of 960MHz, 640MHz or 48〇MHz phase difference of 9 degrees can be generated after the frequency division is selected by the first-divided frequency $ 612 (four, A, eight).

The first in-phase signal (1) and the first-quadrature signal (Q) are obtained by multiplying the first pair of reference signals by the RF television signals input to the frequency band of the quadrature mixer 608, respectively. Preferably, the quadrature mixer 6〇8 is an additive mixer, so the first in-phase signal (1) and the first quadrature signal (Q) are frequency-shifting actions of the frequency band, so that The in-phase signal (I) and the first quadrature signal (Q) become broadband IF signals. In this embodiment, the RF television signal can be planned into three frequency bands, for example, the first frequency band is 50 MHz to 380 MHz, the second frequency band is 370 MHz to 700 MHz, and the third frequency band is 480 MHz to 860 MHz. When the specific channel is in the first frequency band, the RF tracking filter 606 filters out the signal outside the first frequency band, and the first pair of reference signals is 960 MHz, that is, the first frequency divider 612 is selected for divisibility, so that The frequency band of the quadrature mixer 6〇8 is between 1010MHz and 1340MHz, which means that the specific 14-frequency clipping will be between IGIGMHz and 134GMHz. Furthermore, when the specific frequency C is in the first frequency band, the RF tracking device will filter out the domain outside the second frequency band, and the first-to-reference signal is 64QMHz, that is, the k-selection frequency state 612 is performed. Divisible by six, therefore, the quadrature mixer 6〇8, the range of the 5th frequency band is also called MHz, and the carrier of the special channel will be between i嶋MHz~. Similarly, when the specific channel is in the third frequency band, the RF tracking filter 6〇6 filters out the signal outside the second frequency band, and the seismic signal is 480MHz, that is, the first frequency divider 612 is selected for divisibility. Therefore, the frequency range of the signal output by the quadrature mixer 608 is also between 1 〇 1 〇 MHz and 1340 MHz 'that is, the carrier of a specific channel will be between 1 〇 1 〇 MHz and 1340 MHz. Then, the first in-phase signal (I) and the first quadrature signal (Q) are respectively input to the pass-pass filtered states 614, 616 and the amplifiers 617 and 618, and then the two signals are respectively input to a dual quadrature mixer 62. A second in-phase signal (Γ) and a second quadrature signal (Q,) are then generated. The second oscillator 625 generates a second pair of reference signals of the same frequency and having a phase difference of 9 degrees, and the second in-phase signal (Γ) and the second orthogonal signal are generated after the rounding of the bi-orthogonal mixer 620 ( Qf). In this embodiment, the second oscillator 625 includes a voltage controlled oscillator 622 and a second frequency divider 624. Preferably, the adjustable frequency range is between 丨960MHz and 2800MHz. Therefore, only need to be early. A variable frequency voltage controlled oscillator can be implemented, and the second frequency divider 624 can be divided (divided by two) to generate a second pair of reference 15 having a frequency range of 980 MHz to 1400 MHz and a phase difference of 9 degrees. The ^ number and the second pair of reference signals are respectively multiplied by the filtered and amplified first-in-phase signal (I) and the first-quadrature signal (9) to obtain four signals which are identical to the same belief (11), in phase Orthogonal signal (8)), positive, in-phase signal (QI), orthogonal quadrature signal (QQ), and the same phase signal ^1) and orthogonal_Q (QI) can be added to become the second phase U Tiger (I) ffij sums the in-phase quadrature signal (8) and the quadrature orthogonal signal (QQ) into a second quadrature signal (QI). Since the second field oscillator 625 can adjust the output of the second pair of parameters, the carrier of the specific channel in the second in-phase signal and the second quadrature signal (Q·) can be made via appropriate selection. The intermediate frequency signal between (4) and 2 〇MHz, for example, 40MHz, is rejected after the image frequency is rejected by the middle=phase filter 626, and the (4) can be outputted by the other party through the band. - The county said that the ship's _ road can pass the specified iiil. After that, the surface acoustic wave waver 634 is outputted, and the first seismic disk device still has a pair of reference letters. Therefore, the output of the brother is one of the payouts. The selection can also make the second channel of the second tiger (1) "different signal (Q,) carrier Han Han to 4.5MHz low intermediate frequency signal 〇τ, 疋 的 carrier conversion cry 630 refusal f stupid 苜i~0W F) 'Turn out after low-intermediate multi-phase filtering' and pass the - low-pass _32 core other material _ 欢 W W input specific channel. - Silk said, edit = 4.5 dirty after the slumber _ Road ah minus path output 16 1373969

Referring to Table 2, it is all of the voltage controlled oscillators in the second embodiment, the f-rate range, the frequency adjustment ratio, and the _rate= range of the present oscillator. dry. Month Chu

It can be seen from the above embodiments that the television tuners of the present invention are achieved by using a quadrature mixing chirp and a double quadrature mixer with a fixed frequency first pair reference signal and an adjustable second pair reference signal. Conversion of a specific channel carrier. Furthermore, in the first embodiment and the second embodiment, the _ high-fiber device and the amplifier connected in series with the quadrature mixer 17 and the bi-orthogonal multiplexer can be based on the actual circuit phase and the size of the circuit. (4) Between the orthogonal mixing state and the double positive parent mixing state. The invention can also directly input the first-_ signal (1) and the first-quadrature signal (Q) outputted by the quadrature mixer directly into the double-father mixer ' without going through a processing circuit, such as high frequency chopping Processing of the amplifier or amplifier. In view of the above, the present invention has been disclosed in the above preferred embodiments, and it is not intended to limit the invention, and those skilled in the art, without departing from the spirit and scope of the invention, Therefore, the protection system of the present invention is subject to the definition of (4) the patent system attached. [Simple description of the diagram] This case has to be corrected and detailed purchase, knowing the understanding of m. = One diagram - single-down converter _ conversion diagram. C is a schematic diagram of the upper and lower double-actuator. : Figure 2, Huihe is a schematic diagram of another double-turn tuner.

The fourth figure shows the example of the positive sixth and θ s D of the present invention. The first embodiment of the tuner of the frequency converter architecture is shown in the fifth figure. The second implementation of the tuner of the bi-orthogonal mixed-mode 0-frequency architecture of the present invention [main element number description] 18 The components are listed as follows: 402 antenna 404 RF low pass filter 406 low noise transduction amplifier 408 first mixer 409 IF filter 410 second mixer 411 first oscillator 412 second oscillator 502, 602 antenna 504, 604 low noise variable gain amplifier 506 low pass filter 508, 608 quadrature mixer 510, 610 first voltage controlled oscillator 512, 612 first frequency divider 513, 613 first local Oscillator 514, 516, 614, 616 high pass filter 517, 518, 617, 618 amplifier 520, 620 double quadrature mixer 522 voltage controlled oscillator group 522a second voltage controlled oscillator 522b third voltage controlled oscillator 522c Four voltage controlled oscillators 524, 624 second frequency divider 525, 625 second present oscillator 526, 626 intermediate frequency polyphase filters 528, 628 band pass filters 530, 630 low intermediate frequency polyphase filters 532, 632 Low pass filter 534, 634 surface acoustic wave filter 622 pressure controlled oscillator 606追縱 suddenly wave 19

Claims (1)

1373969 2011/9/22_lsl Application & Amendment 10. Patent scope: 1. A television tuner comprising: a receiving end for receiving a radio frequency signal; an RF tracking filter for receiving the radio frequency signal and the radio frequency After the signal is planned into a plurality of frequency band signals, outputting a first frequency band signal of the plurality of frequency bands and filtering out signals other than the first frequency band signal; a first present oscillator, according to the first frequency band signal Providing a first pair of reference signals of a fixed frequency; a quadrature mixer for receiving the first frequency band signal and the first pair of reference signals and outputting a first in-phase signal and a first one in a specific frequency band a quadrature signal; a first seismic device for generating a second pair of reference signals of adjustable frequency; a dual quadrature mixer for receiving the first in-phase signal, the first quadrature signal And outputting a second in-phase signal and a second quadrature signal to the second pair of reference signals; and a polyphase filter for receiving the second in-phase signal and the second positive-parent signal and generating a middle frequency number. 2. The television tuner according to claim 1, wherein the first pair of reference pseudo-signals has a phase difference of 9 degrees and the second pair of reference signals has a phase difference of 9 degrees ❶ 3. As claimed in claim 1 The television tuner, wherein the first oscillator comprises: a first voltage controlled oscillator for generating an oscillating signal of 3840 MHz; and 20 丄: 2011/9/22-151 Shen Fu & Amendment y a frequency divider for dividing the frequency of the oscillating signal by a divisor to generate the first-pair reference signal of the _determined frequency; wherein 'when the RF tracking filter outputs the first frequency band of 5 〇 MHz to 380 MHz, The divisor is 4, the first frequency divider generates the first pair of reference signals of 960 MHz. When the RF tracking filter outputs 370 370 MHz to 700 MHz, the divisor is 6, the first frequency divider Generating the first pair of reference signals of 640 MHz. When the RF tracking filter outputs the first frequency band of 480 MHz to 86_Z, the divisor is 8, and the first frequency divider generates the 480 MHz of the oscillation § § A pair of reference signals. 4. The television spectrometer of claim 3, wherein the frequency range of the particular frequency band is between 1010 MHz and 1340 MHz. 5. Such as the scope of patent application! In the television spectrometer, the multiphase chopper is an intermediate frequency multiphase comparator for generating the intermediate frequency signal and outputting the filtered intermediate frequency signal via a band pass filter. 6. The television spectrometer of claim 5, wherein the filtered intermediate frequency signal is input to a surface acoustic wave filter. 7. The television tuner of claim 1, wherein the multiphase chopper is a low intermediate frequency multiphase chopper and the intermediate frequency signal is a financial signal and is filtered through a low pass filter output. The low IF signal. 8. The television tuner of claim 1, wherein the second present oscillator comprises: - a voltage control "group" comprising a plurality of control oscillators for generating an adjustable An oscillating signal; and a second frequency divider, the second frequency divider can apply the adjustable oscillating signal 21 丄j / 2〇U/9/22_lsl to the frequency of the correction and the frequency of the correction The second pair of reference signals. A television tuner, comprising: a receiving end for receiving a radio frequency signal; a chasing chopper, receiving the radio frequency signal, and synthesizing the radio frequency signal f with a plurality of frequency pair signals, and outputting the plurality of signals a -band signal in the frequency band and filtering out signals other than the first frequency band signal; - a first-local (four) device providing a first pair of reference signals of a fixed frequency according to the first frequency band signal; a positive parent (four) 11 ' Receiving the first-band signal and the first-pair reference signal and outputting a first-phase signal of a first-phase signal in a specific frequency band; - a first processing circuit for receiving an in-phase signal and outputting a processed first in-phase signal; a second processing circuit 'receiving the first-quadrature signal and outputting a processed first orthogonal signal; a second presenting oscillator for generating a frequency-adjustable one a second pair of reference signals; / a bi-orthogonal mixer for receiving the processed first in-phase signal, the processed first-quadrature signal and the second pair of reference signals, and outputting a second in-phase signal and a second orthogonal signal; and a Phase filter, for receiving the second phase signal and the second orthogonal signal and generating an intermediate frequency signal. 10. The television tuner of claim 9, wherein the first pair of reference signals have a phase difference of 90 degrees and the second pair of reference signals have a phase difference of 9 〇 22 degrees. 2011/9/22"51 Shenfu & Amendment to the earthquake tune ^ Patent Scope 11 described in the TV Tuning 11, which is the first *40 · ^ > 1 shock control M device 'to generate a test The cover is now, and the _Zengyi frequency divider is used to divide the frequency of the oscillating signal by a divisor and then produce the first-to-one reference signal of the solid and frequency; The first output of the filter output 50MHz to 380MHz is 4, and the first frequency divider generates the first reference reference 960 of 960MHz, when the RF tracking filter outputs 37〇MHz to (10) In the first frequency band, the divisor is 6, the first frequency divider generates the first pair of reference signals of 64_z, and when the radio frequency tracking filter outputs the _th frequency band of 480 MHz to 860 MHz, the divisor is 8. The first frequency divider generates the first pair of reference signals of 48 〇 MHz by the oscillating number. 12. The television tuner of claim n, wherein the frequency range of the particular frequency band is between 1010 MHz and 1340 MHz. 13. The television tuner of claim 9, wherein the polyphase filter is an intermediate frequency polyphase filter for generating the intermediate frequency signal and outputting the filtered intermediate frequency signal via a band pass filter. 14. The television tuner of claim 13, wherein the intermediate frequency signal after the wave is input to a surface acoustic wave filter. 15. The television tuner of claim 9, wherein the polyphase filter is a low intermediate frequency polyphase filter and the intermediate frequency signal is a low intermediate frequency signal and is filtered by a low pass filter output. The low IF signal. 23 1373969 ^ ^ m Λ 2011/9/22"51 Application and Amendment 16. The seismic device of claim 9 includes: a power amplifier, wherein the second one is a voltage controlled oscillator group The voltage control device is configured to generate an adjustable-magnitude signal comprising a plurality of voltage-controlled shock-second frequency dividers for dividing the frequency of the first-to-one reference oscillation signal after a divisor by: 7. The television shifter of the electric power t9, wherein the first-stage strict processing k-processing circuit comprises a high-frequency filter, such that the =. - The in-phase signal and the processed - quadrature signal are - the first phase of the chopping 彳 § and one; the orthogonal signal of the wave. The television spectrometer of claim 9, wherein the first 3-way and the second processing circuit each include an amplifier such that the processed in-phase signal is processed and first orthogonal The signal is an amplified first in-phase k number and an amplified quadrature signal. 19. The television tuner of claim 9, wherein the first in-circuit and the second processing circuit each comprise a high frequency filter and an amplifier connected in series such that the processed first in-phase signal And the processed first orthogonal signal is a filtered amplified first-in-phase signal and a filtered amplified orthogonal signal 0 24